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23 March, 12:13

Write the sum of the numbers as the product of their GCF and another sum 15+81

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Answers (1)
  1. 23 March, 12:42
    0
    63+15=3 * (21+5)

    The prime factors of

    63

    are

    3

    *

    3

    *

    7

    and those of

    15

    are

    3

    *

    5

    As only

    3

    is common, GCF is

    3

    and as such

    63

    +

    15

    can be written as

    63

    +

    15

    =

    3

    *

    21

    +

    3

    *

    5

    =

    3
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